Where can I buy dota2 weather effects?

Dota2 weather effect cannot be purchased. Weather special effects are obtained through special activities and cannot be bought or traded. Knife Tower 2, also known as DOTA2, is a game jointly developed by Ice Frog (Icefrog), the core map maker of DOTA, and Valve Company of the United States. The test was started on April 28th, 20th/Kloc-3rd, and the Chinese name was "Knife Tower", which is the second work in this series.